Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979p%26ss...27..355t&link_type=abstract
Planetary and Space Science, vol. 27, Apr. 1979, p. 355-364.
Astronomy and Astrophysics
Astronomy
Cosmic Rays, Diurnal Variations, Radiation Distribution, Anisotropy, Astronomical Models, Graphs (Charts), Harmonic Radiation, Radiant Flux Density
Scientific paper
The expected diurnal waves with different harmonics in cosmic ray intensity arising from the semidiurnal anisotropy, due to the geometrical inclination of the earth's axis, are calculated for different cosmic ray stations. The sensitivity of these waves to the exponent n of the latitude dependence function cos exp n lambda for the semidiurnal anisotropy is investigated. The amplitudes of the geometrical tridiurnal waves for high latitude stations show a great sensitivity to n and, therefore, it is concluded that its value can be determined precisely from the tridiurnal wave rather than from the semidiurnal waves observed at different latitudes. Available data from high latitude neutron monitors were used to determine n and it was found as 2 plus or minus 0.4, which is of higher accuracy than the previously determined values.
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